Spray gun



Jane 28, 1936.. F. D|PPMAN 2,02%61 I SPRAY GUN 2 Sheets-Sheet 1 Filed Sept. 2, 1951 A ltorney Jan. 2, 1936. F. R. DIPPMAN 2,029,061

SPRAY GUN Filed Sept. 2, 1931 2 Sheets-Sheet 2 FIG. 7

Invent I FRED 1E. DIPPM Attorney Patented Jan. 28, 1936 UNH'ED dTATES 2,029,5itl

SPRAY GUN Fred R. Dippman, Mansfield,

Ohio, assignor to The Ohio Brass Company, Mansfield, Ohio, a corporation of New Jersey Application September 2, 1931, Serial No. 560,795 14 Claims. (Cl. 184-15) My invention relates to mechanism for the purpose of spraying a liquid material upon a conductor from a moving vehicle.

It has been found that it is a decided advantage in many respects to lubricate the trolley wire. This is especially true where the current collector at the end of the trolley pole is of the sliding or shoe type.

If the collector is of the rolling or wheel type the benefits derived from lubricating the trolley wire are very much less. This is probably due to the fact that a wheel will have a very small contact with the trolley wire and hence as it moves along the wire and breaks contact there- 5 with an arc will take place which pits the wheel and pits the wire and this will take place regardless of whether the wire is lubricated or not.

It has been found that a trolley wire which has been somewhat pitted from the use of a i wheel can have its contact surface smoothed by replacing all the wheels with shoes and frequently lubricating the trolley wire.

A Well-lubricated trolley wire upon which shoes are used will last very much longer than an unlubricated wire and the shoes will also last longer.

Therefore, the object of my invention is to provide means for applying a lubricant to the trolley wire and .a method of lubricating the wire.

My invention resides in the new and novel construction, combination and relation of the various parts herein described and shown in the drawings accompanying this specification.

In the drawings:

Fig. l is a top View of my invention which is secured to the end of a trolley pole or other support.

Fig. 2 is a side view of the mechanism shown in Fig. 1 and in addition other parts required to complete my invention.

Fig. 3 is .an end view of Fig. 2 without the air gun as later described.

Fig. 4 is an end view of Fig. 2 including the air gun.

Fig. 5 is Fig. 2.

Figs. 6 and 7 are side and end views respectlvely of Fig. 5.

Fig. 8 is a top view of the support for the main trolley shoe as later described.

Figs. 9 and 10 are side and end views respectively of Fig. 8.

Fig. 11 is a sectional view of the upper or outlet portion of the spray gun.

a top view of the body shown in In the preferred embodiment of my invention I use a main supporting member I arranged to be mounted on a trolley pole 2 or other support and secured thereto by means of rivets 3. Mounted on the member I is an upright pedestal 5 member 4 having a cup-shaped portion 5 at its upper end with a spheric concave surface. The main current collecting shoe 6 has a projection 1 on its lower face having a convex spheric surface which corresponds to the concave spheric 10 surface of the pedestal 4. The shoe 6 has a groove 8 the surface of which contacts with the trolley wire 9. The shoe support I0 is shown in detail in Figs. 8, 9 and 10 and is secured to the shoe by means of the bolts II passing 15 through the holes I2. The pedestal 4 projects through the central hole I3 and when the member I9 is secured in position and with the shoe 6 as shown in Fig. 2 the shoe and member ID are free to pivot in a vertical plane about the center 20 of radius of the said spheric concave surface and is also free to pivot about the vertical axis of the pedestal 4.

The shoe support In when secured to the shoe 6 as shown by the dotted-in shoe in Fig. 9 will 5 provide a space I4 between the support and the shoe and is due to the raised portion I5 upon Which the shoe 6 rests. The projecting portion I5 has curved ends I6 the center of radius being the center of the hole I3. The space I4 is sufii- 30 cient to receive therein body member I 7 which is formed preferably of sheet metal and shown in Figs. 5, 6 and 7.

The body has a top portion I8 which has aperture I 9 with curved ends 20 the radius of 35 which is the same as that for the ends I6 in the support II! but the width of the aperture is somewhat greater than the width of the portion I5, therefore, it will be seen that the member I! may pivot relative to the member ID and the shoe 6 40 in a substantially horizontal plane and will also pivot relative to the support 4 in a vertical plane but in this case the support I0 and the shoe 6 will pivot with the member I1.

The holes 2| are to receive the screws 22 for 45 securing the shoe 23 to the member I7.

The member I I has spaced and downwardly projecting sides 24 and the sides are'provided with registering openings 25 and 25 and also with a plurality of openings 21. 50

When the member I1 is mounted between the support I!) and the shoe 6, the shoe 23 secured thereto will be in substantial alinement with the shoe 6 and both shoes will be free to contact with the trolley wire 9. In order to maintain 55 the holes 25. This spring is biased to move the shoe 23 upwardly.

Mounted between the sides 26 is an adjustable This carrier 7 carrier 36 having a spray gun 32. is pivotally mounted by means of the screw 33 and passes through a lug 3 on the member 35 and this lug is threaded to cooperate with the screw 33 and by rotating the screw in the proper direction the lug 3 5 will be moved laterally in one direction or the other thus adjusting the upper end of the carrier 3h The screw 33 is then looked into position by the nut 35. The lower end of the carrier is provided with oppositely disposed projecting bosses 36, the combined length of which substantially equals the space between'the sides Z l. The bosses Stare apertured to receive through one of the holes 2?. It will be seen that the lower end of the carrier 3i may be swung 9, Adjustments of the longitudinally about the pin 33 by placing the screw 3'! in the the nozzle 38 vertically with respect to the wire 7 screw 33 will move the nozzle laterally relative to the wire 9. 7

Having adjusted the position of the gun relative'to the member I? it will be evident that any movement of the member ll is transmitted to the gun 32.

. The movement of the about the vertical axis r-a: of the support 4 and relative to the shoe 6 permits the device to move around a curve or through overhead devices much more freely than if the, shoes 6 and 23 were held in fixed alinement. The shoes 6 and 23 will guide the gun 32 relative to the wire.

The carrier 3! is provided with a portion forming-a slot 39 which receives the handle ti! of the gun 32. The device may be made to take one of the standard spray guns upon the market.

I am' not claiming any new and novel features in connection with the gun 32 as there are many types and constructions now on the market but I prefer a gun in which the fluid to be sprayed is led into and through the gun under pressure and is sprayed by'n'ieans of air pressure, both the fluid and the air emergin from the'nozzle 3B simultaneously.

v In Fig. 11 I have indicated aportion. of the outlet or nozzle and which may consist of an outer casing H and an inner tube d2. 7 The inner tube is connected to the conduit G3 which supplies'the spray material to the gun and the outlet of the tube 52 is controlled by a needle valve 64 and which in turn is operated to an open 7 position by means of the lever 'ably held closed by' The amountto which theneedle valve can be set is by means of adjusting screw is: The space H between the members A l I and a spring.

' I in combination with" the flower" the material and gun permanentlysets the amount is connected to the air conduit 4%. An adjusting screw fil positioned in the conduit 48 inthe of airwhich can pass through the gun; 'When" the device is in use I prefer to have the air escaping co-n? fstantly" as this tends to keep the outlet 5%! free of material and whenever the needlevalve id is V close'd it will clean the outlet in the tube 42. I

The entire deviceithus described'ismounted upon a trolley pole 2 and which is secured at the lower end of 'the'roofof a'moving vehicle and the screwtl also passing desired hole ll thus adjusting member El and shoe 23' 5E and is prefer- 32 permits of the air escaping as is well known a spring at the lower end of the trolley pole is constantly urging the upper end of the pole to move upwardly.

Conveniently located on the vehicle is a receptacle 5| to which are connected the conduits 43 and 48 and the conduit &3 leads adjacent the bottom of the receptacle and the conduit ill leads from the top of the receptacle. Air is brought into the receptacle from any source on the car through the conduit 52 and through a pressure regulator 53. The receptacle may be supplied with a pressure gauge 54 if desired.

The flow of material and air to the 43 and it may be controlled at the reservoir 5! by means of the valves 55 and 55 respectively. The carrier 35 may be provided-with an opening 51 therethrough and in which may be positioned one of the conduits as, for instance, d3. reservoir 5! may be located anywhere convenient on the vehicle as for instance in the front or'rear vestibule or if desired it may be located on the roof near the trolley base. v L In the operation of my invention I prefer to mount the same upon a special vehicle, set apart for the workof lubricating the trolley wire. 7

The mechanism is preferably mounted'upon the end of a trolley pole or other equivalent. support. The apparatusimay be controlled by an operator positioned on the roof of the vehicle or on the back platform. In either case it may bedesirable to provide the lever 45 with a rope or cord 58 by means of which the lever i5 maybe operated to move the needle'valve 45 to its open position and the member I! is provided with a cord or rope 59 by means of which may remove the rear shoe 23 .out of contact with the trolley wire and this is quite desirable when the car is passing overhead switches, frogs, crossings, etc. This will permit the shoe ,6 to remain in contact with the overhead structure and the current through If desired the shoe 6. may the trolley wire if a continued pull is exerted upon the rope 59 sufficient to overcome the tension of the spring in the trolley pole base The 4 The lubricating'material may be of many dif- 73 ferent combinations as desired but I prefer to use a material containing a large percentage of conduits the operator 7 The the motors will not be broken; also be removed from graphite'held in suspension in afluid and of the consistency of cream. This I find will work quite tains a quick-drying material it will set quite rapidly upon itsdeposit upon the wire. 7

The reservoir 18 connectedto the air brake sys-r approximately twenty pounds pressure 7 within the receptacle although other pressures may "be used as required. This pressure upon the mate- 'rial BlLwillfforce the same through the conduit G3 to the air gun and simultaneously air will pass from the receptacle through the conduit 8 to the." gun and will escape through the nozzle, depend ing upon the amount permitted bythe adjustment of the screw 59. Upon pulling the rope 5B the needle valve M will openand permit the material to beffor ced through the nozzle 38"and satisfactorily through the gun and if'it contem on the car and the regulator is set to give deposited upon the wire 9. The combination of the material and air at the-nozzle will tend to break up the material and spray it in a fine mist upon the surface of the wire The material may be'of such a nature that it will clog the opening the gun in alinement of the tube 42 andwhen this occurs the obstruca horizontal plane.

The conduits 43 and 48 should be flexible and rubber hose will serve the purpose.

There will be many modifications to my invention which will suggest themselves to those skilled in the art after having read the above description and therefore I Wish to be limited only by my claims.

I claim:-

1. A spray apparatus comprising a body, a pair of current collectors secured to the body, a support for the body, means to secure the support spray a liquid thereon, means associated with the gun to control the flow of liquid through the gun and means to operate the control means from a point remote from the gun.

3. A spray device comprising a support member, current collecting mechanism mounted on the support, a spray gun mounted on the support and having a nozzle in longitudinal alinement with the collecting mechanism, means to adjust the position of the gun nozzle in a lateral direction and means to adjust the position of the gun nozzle in a vertical direction relative to the collecting mechanism.

4. A spray apparatus comprising a support, a current collector mounted thereon to engage a trolley wire, a spray gun, a supporting means for the gun comprising means secured to the gun on the support to hold collector, yielding means the wire, means to hold with the wire, means to adjust the gun transversely of the wire, means the gun relative to the urging the gun towards conduct air to the gun.

members to vary the position of the mechanism to ing means towards the wire when the apparatus is in use.

10. A spray apparatus comprising a support, a guide mounted the Wire, means to conduct a fluid to the gun, means to control the flow of the fluid through the gun and means to conduct air to the gun to clear the gun nozzle of lubricant.

11. Apparatus for applying a coating material to a trolley wire comprising a body, a pair of aligned guide members which engage the trolley Wire and slide therealong and guide the body relative to the wire, a support for the body and means to engage the .a fluid lubricant to the wire, a

guide members, coating means to apply the coating material to the wire and means to adjust the relation of the coating means to the guide members to vary the position of the coating means relative to the trolley wire.

12. A lubricating apparatus comprising a support, guide means mounted on the support to engage a trolley wire, lubricant applying meansand means supported by the support to hold the lubricant applying means in longitudinalalignment with the guide means, means to adjust the .lubricant applying means laterally relative to the guide means and means to adjust the position of a the lubricant applying means in a vertical direction relative to the support.

, 13. Apparatus for lubricating the trolley wire 7 wire comprising guiding trolley wire and guide the apparatus relative to the wire, lubricating means movable in a substantially horizontal plane relative to the guiding means'as the apparatus moves along the trolley wire for applying 7 pivotal support for the lubricating means and the guiding means,

as it moves along the means guide to engage the wire I to supply the lubricating means with the fluid lubricant and yielding means constantly urging the lubricating means to pivot relative to the support and toward the trolley wire.

14. A lubricating apparatus ior trciley wires comprising a lubricator for applying a fluid lubricant to the lower uriace of the trolley wire, a

and position the apparatus relative thereto and spaced frem the lubrica'tor, a support for the guide and the lubricator, the lubricator and the guide mounted to pivot relative to. each other in a substantially horizontal plane as the apparatus passes through an overhead curve construction and both the guide and the ilubricator to pivot relative to the support in (a substantially horizontal plane and a substantially verticai plane and an auxiliary guide positioned intermediate the first {guide and the lubr'icator to guide .the trailing end of the lubricator relative to the wire without preventing the said relative pivoted movement of thelubricator and .firstguide and spring means constantly urging the .lubricator toward the wire.

R. DIPPMAN. 

